Public Act 348 of 2012, Senate Bill 116, http://goo.gl/jgUkuq (accessed July 30, 2013); Public Act 349 of 2012, House Bill 4003, http://goo.gl/r7AJjx (accessed Aug. 19, 2013).

2  "Union Membership in Michigan - 2012," (Bureau of Labor Statistics, U.S. Department of Labor, Midwest Information Office, 2013), 4-5, http://goo.gl/lN1yVc (accessed Aug. 20, 2013).

3  William J. Moore, "The Determinants and Effects of Right-to-Work Laws: A Review of the Recent Literature," Journal of Labor Research 19, no. 3 (1998): 461.

4  Ibid.

5  William J. Moore, "Membership and Wage Impact of Right-to-Work Laws," Journal of Labor Research 1, no. 2 (1980): 461; Thomas J. Holmes, "The Effect of State Policies on the Location of Manufacturing: Evidence from State Borders," Journal of Political Economy 106, no. 4 (1998).

6  William T. Dickens and Jonathan S. Leonard, "Accounting for the Decline in Union Membership, 1950-1980," Industrial and Labor Relations Review 38, no. 3 (1985); Richard B. Freeman, "Why Are Unions Faring Poorly in Nlrb Representation Elections," in Challenges and Choices Facing American Unions, ed. Thomas A. Kochan (Cambridge, MA: MIT Press, 1984); Henry S. Farber, "The Recent Decline of Unionization in the United States," Science 238, no. 4829 (1987); Edward P. Lazear, "Employment at Will, Job Security, and Work Incentives" (paper presented at the Conference on Employment, Unemployment, and Hours of Work, Science Center Berlin, September 17-19, Year); Melvin W. Reder, "The Rise and Fall of Unions: The Public Sector and the Private," Journal of Economic Perspectives 2, no. 2 (1988) http://goo.gl/luDQEZ (accessed Aug. 1, 2013); Paul Jarley and Jack Fiorito, "Associate Membership: Unionism or Consumerism," Industrial and Labor Relations Review 43, no. 2 (1990).

7  Robert J. Newman, "Industry Migration and Growth in the South," The Review of Economics and Statistics 65, no. 1 (1983).

8  Lonnie K. Stevans, "The Effect of Endogenous Right-to-Work Laws on Business and Economic Conditions in the United States: A Multivariate Approach," Review of Law and Economics 5, no. 1 (2009).

9  Richard Vedder, Matthew Denhart and Jonathan Robe, "Right-to-Work and Indiana's Economic Future," (Indiana Chamber of Commerce, 2011), 13, http://goo.gl/kVvgK (accessed July 31, 2013).

10  Michael J. Hicks, "Right-to-Work Legislation and the Manufacturing Sector," (Center for Business and Economic Research in the Miller College of Business at Ball State University, 2012), http://goo.gl/kVvgK (accessed June 20, 2013).

11  W. Robert Reed, "How Right-to-Work Laws Affect Wages," Journal of Labor Research 24, no. 4 (2003).

12  Peter Pedroni, "Critical Values for Cointegration Tests in Heterogeneous Panels with Multiple Regressors," Exford Bulletin of Economics and Statistics 61, no. S1 (1999).

13  Ivan Fernandez-Val and Francis Vella, "Bias Correction for Two-Step Fixed Effects Panel Data Estimators," 2007), http://goo.gl/ YMh7fN (accessed Aug. 1, 2013).

14  Halbert White, "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Text for Heteroskedasticity," Econometrica 48, no. 4 (1980).

15  W. Robert Reed, "How Right-to-Work Laws Affect Wages," Journal of Labor Research 24, no. 4 (2003).

16  Thomas J. Holmes, "The Effect of State Policies on the Location of Manufacturing: Evidence from State Borders," Journal of Political Economy 106, no. 4 (1998).

17  James P. LeSage and Matthew Dominguez, "The Importance of Modeling Spatial Spillovers in Public Choice Analysis," Public Choice 150, no. 3-4 (2012).

18  Lonnie K. Stevans, "The Effect of Endogenous Right-to-Work Laws on Business and Economic Conditions in the United States: A Multivariate Approach," Review of Law and Economics 5, no. 1 (2009); Michael J. Hicks, "Right-to-Work Legislation and the Manufacturing Sector," (Center for Business and Economic Research in the Miller College of Business at Ball State University, 2012), http://goo.gl/yMgHb (accessed June 20, 2013); Thomas J. Holmes, "The Effect of State Policies on the Location of Manufacturing: Evidence from State Borders," Journal of Political Economy 106, no. 4 (1998); Richard Vedder, Matthew Denhart and Jonathan Robe, "Right-to-Work and Indiana's Economic Future," (Indiana Chamber of Commerce, 2011), http://goo.gl/kVvgK (accessed July 31, 2013).

19  Thomas J. Holmes, "The Effect of State Policies on the Location of Manufacturing: Evidence from State Borders," Journal of Political Economy 106, no. 4 (1998).

20  Lonnie K. Stevans, "The Effect of Endogenous Right-to-Work Laws on Business and Economic Conditions in the United States: A Multivariate Approach," Review of Law and Economics 5, no. 1 (2009).

21  Richard Vedder, Matthew Denhart and Jonathan Robe, "Right-to-Work and Indiana's Economic Future," (Indiana Chamber of Commerce, 2011), http://goo.gl/kVvgK (accessed July 31, 2013).

22  Michael J. Hicks, "Right-to-Work Legislation and the Manufacturing Sector," (Center for Business and Economic Research in the Miller College of Business at Ball State University, 2012), http://goo.gl/yMgHb (accessed June 20, 2013).